KDL while running PHP testsuite: "failed to acquire spinlock %p for a long time"
|Reported by:||pulkomandy||Owned by:||pdziepak|
A recipe for php 5.6.2 is available at haikuports. Building it and running the testsuite results in a repeatable KDL. the error happens in
_php_stream_fopen_from_pipe which calls _user_unmap_memory and ens up in a reschedule.
I tried to debug this as requested in #11032, but results are strange.
running shows that the 3 other cores in my CPU are running idle threads. This looks correct, the machine freezes for a short time before it panics, but it is unexpected.
Trying to analyze the spinlock results in
locked from 0x0000000. So it looks something went wrong with the spinlock.